Maximum contaminant level goals for microbiological contaminants.

(a) MCLGs for the following contaminants are as indicated: Contaminant MCLG (1) Giardia lamblia zero (2) Viruses zero (3) Legionella zero (4) Total coliforms (including fecal) zero coliforms and Escherichia coli (5) Cryptosporidium zero (6) Escherichia coli (E. coli) zero (b) The MCLG identified in paragraph (a)(4) of this section is applicable until March 31, 2016. The MCLG identified in paragraph (a)(6) of this section is applicable beginning April 1, 2016. [78 FR 10347, Feb. 13, 2013]